-up c-- ccc ccd cce cco ccp ccu cdc cdd cde cdo cdp cdu ce- cec ced cee ceo cep ceu co- coc cod coe coo cop cou cpc cpd cpe cpo cpp cpu cuc cud cue cuo cup cuu dcc dcd dce dco dcp dcu ddc ddd dde ddo ddp ddu de- dec ded dee deo dep deu doc dod doe doo dop dou dpc dpd dpe dpo dpp dpu duc dud due duo dup ec- ecc ecd ece eco ecu ed- edc edd ede edo edp edu eec eed eee eeo eep eo- eoc eod eoe eoo eop eou ep- epc epd epe epo epp epu eu- euc eud eue eup oc- occ ocd oco ocp ocu odc odd ode odo odp odu oec oed oee oeo oep oo- ooc ood ooo oop op- opc opd ope opo opp ou- ouc oud oue ouo oup p-p pcc pcd pce pco pcp pcu pdc pdd pde pdo pdp pdu pec ped pee peo pep peu poc pod poe poo pop pou ppc ppd ppe ppo ppp ppu puc pud pue pup puu ucc ucd uce uco ucp ucu udc udd ude udo udp udu uec ued uee uep uoc uod uoe uoo uop up- upc upd upe upo upp upu uuc uue uuu